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Python set discard method

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Python set discard is one of the set method, which is used to discard or remove an item from the given set. In this article, we will show you, How to use this Python discard set function with practical examples.

TIP: Please refer sets article to understand everything about Sets.

Python set discard syntax

The basic syntax behind this discard function is:

set_Name.discard(element)

Python set discard Example 1

The set discard function is same as remove function. This function helps you to discard or remove an item from a given set.

This is very useful function, if you know the item you want to discard. Below code discards or remove 30 from a given set called  discardSet

# Python set discard method

discardSet = {10, 25, 30, 45, 50}
print("\nOld Set Items = ", discardSet)

# Python Discard Set Item
discardSet.discard(30)
print("After Discard Method - Set Items = ", discardSet)

OUTPUT

Python set discard method 1

Let me show you another set discard method example. So that, you can get the complete idea.

How to discard set item in Python Example 2

In this example, first, we declared a string set. Next, we used this set discard method on this string set. Here, discard function will discard or remove orange from the discard fruits set.

# Python set discard method

discardFruitSet = {'apple', 'mango', 'cherry', 'kiwi', 'orange', 'banana'}
print("\nOld Set Items = ", discardFruitSet)

# Python Discard Set Item
discardFruitSet.discard('orange')
print("After Discard Method = ", discardFruitSet)

OUTPUT

Python set discard method 2

How to discard set item in Python Example 3

As we said earlier, this function is same as remove method. However, if are discarding non-existing items, this function dose not throw an error.

In this example, we tried to remove Berry from fruits set.

# Python set discard method

discardFruitSet = {'apple', 'mango', 'cherry', 'kiwi', 'orange', 'banana'}
print("\nOld Set Items = ", discardFruitSet)

# Python Discard Set Item
discardFruitSet.discard('orange')
print("After Discard Method = ", discardFruitSet)

# Python DIscard Non existing set item
discardFruitSet.discard('Berry')
print("After Discard Method = ", discardFruitSet)

OUTPUT

Python set discard method 3

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